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# Set Array Variable

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

The Set Array Variable action step enables you to assign new values to an array.

One possible use is to copy a list to an array in order to iterate through all elements in the list
more easily and to process individual list elements further.

## Properties

The _Set Array Variable_ action step contains no other properties other than the _general_ ones.

## Inbound Variables

**Array to change** (Array) Array in which values are to be changed.

The array must have previously been created as a _Workflow Based Variable_ or using _Read from Excel
File_.

Please make sure that arrays are named according to their content. This makes a Workflow easier to
understand.

It is preferable to create an extra array in the _Workflow Based Variables_ rather than to overwrite
an array created using the _Read from Excel File_ action step with different values.

**New array value** (array or alphanumeric) Values to overwrite the entire array.

The entire array is rewritten with the given values. The former values are deleted.

By changing the values it is possible to also change the number of elements in the array (_Array
Count_).

## Outbound Variables

The _Set Array Variable_ action step possesses no outbound variables.

## Wizard

The _Array to change_ is the array with values to be overwritten. You can select it from a drop-down
list if such an array already exists.

The _New array value_ is the new values for overwriting the array. You can include them via a Pin
Variable or enter them directly as a list of comma separated values in the relevant field.

The elements for array variables must be separated by commas.

The values for array variables are initially saved as strings. That is why, when saving the action
step, all array elements which are not yet presented in double quotes will automatically be placed
in double quotes.

If you want to include an element containing one or more commas in your list, you must place this
element in double quotes before saving it.

E.g. “4,2” or “many commas: ,,,, , , ”

Text elements are permitted to contain single quotes:

E.g. “This ‘text’ contains single quotation marks.”

Text elements which need to contain double quotes must include another double quotation mark before
each double quotation mark and the whole element also needs to be placed inside double quotes.

E.g. “This “”text”” contains double quotation marks.”

## Example

Car servicing is to be automated at a workshop.

For testing purposes, the array _Services_, which is generated via the _Workflow Based Variables_
and which contains the services actually performed, can be pre-populated with values. Further on in
the Workflow, services are read from a scanned-in form, e.g. using _OCR_, and the array _Services_
in the _Set Array Variable_ action step is overwritten with the actual values.